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Conversion Bulb - HPS Ballast - MH Bulb These unique bulbs allow a High Pressure Sodium (HPS) lighting system to produce Metal Halide (MH) light. Product ID: XCONVHPS-MH Category: Lighting-Bulbs-Conversion Select a Bulb 250W Plantmax $31.96 400W Plantmax $31.96 400W SunMaster $51.96 400W EYE Hortilux $99.95 400W Ushio Opti-Blue $101.56 600W Plantmax $75.96 600W SunMaster $109.56 1000W Plantmax $71.96 1000W EYE Hortilux $174.95 1000W Ushio Opti-Blue $116.76 Quantity

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